Module 1 Advance routing and switching

Question 1

All enterprise networks must:

Answer 1

Support the exchange of various types of network
Support critical applications
Support converged network traffic
Support Diverse business needs
Provide centralized administrative control

Question 2

The _____ is the networking infrastructure that provides access to network resources for end users over a single floor or a building

Answer 2

LAN

Question 3

The network designer must develop a strategy to enable a network to available, scalable, and manageable. This design includes:

Answer 3

1. Use expandable or modular network equipment that can easily be upgraded to increase capacities and capabilities
2. Design a hierarchical network to include modules that can be added, removed, modified, and upgraded.
3. Design a hierarchical IP address that is either IPv4 or IPv6
4. Choose routers or multilayer switches to limit broadcast and filter unwanted traffic
5. Implement redundant links between critical devices and between access and core.
6. Incorporate wireless LAN devices to support user mobility
7. Use network management tools to enable centralized monitoring and administration.

Question 4

In a hierarchical network design, why are there 3 layers?

Answer 4

To allow each layer to perform specific functions, which simplifies the network design easier for deployment and management.

Question 5

What are the 3 layers in a hierarchical network design?

Answer 5

Core
Distribution
Access

Question 6

When multiple links are connected to a router or an L3 switch which is then turned into a single link, it is possible to have a ______

Answer 6

bottleneck

Question 7

________ allows the network administrator to increase the bandwidth between devices

Answer 7

Link aggregation

Question 8

Under link aggregation, what can be done to several physical links?

Answer 8

Bundled into 1 to make a stronger link
and load balancing between physical links

Question 9

Cisco’s link aggregation technology is _______

Answer 9

EtherChannel

Question 10

A well designed network should limit _____

Answer 10

Failure domains

Question 11

It is the area of network that is impacted when critical device or network devices experiences problem

Answer 11

Failure domains

Question 12

What is the impact of smaller failure domains?

Answer 12

It reduces the impact of a failure but also making it easier for troubleshooting

Question 13

In which layer is controlling the failure domains easier? Why?

Answer 13

Distribution layer since it only affects few users as this is contained to only a small area

Question 14

_________ is an important part of the network design for preventing disruption of network services.

Answer 14

Redundancy

Question 15

Minimize the possibility of a single point of failure by:

Answer 15

1. Installing duplicate equipment and providing failover services
2. Installing redundant patjs

Question 16

What is STP?

Answer 16

STP provides a mechanism for disabling redundant paths in a switched network until the path is necessary such as when a failure occurs.

Question 17

It enables coordination between duplicate routers to adjust to a gateway failure.

Answer 17

First Hop Redundancy Protocols

Question 18

Wireless connectivity is an important aspect of extending access layer connectivity by _____?

Answer 18

Supporting user mobility

Question 19

What are the advantages of wireless connectivity?

Answer 19

Increased flexibility, reduced cost, ability to adapt to changing network and business requirements.

Question 20

Network management involves:

Answer 20

Collecting and analyzing data
Implementing configuration changes to network devices

Question 21

What simplifies administrative tasks by providing centralized and automated management capabilities?

Answer 21

Network management tools

Question 22

What may be used to connect one network to another network as the LAN grows?

Answer 22

Routers

Question 23

How do routers learn routes?

Answer 23

statically through manual administrator configuration and dynamically by automatic sharing of routes with other routers

Question 24

An essential skill for scaling networks

Answer 24

formulating and interpreting network routes to move packets